On Wed, Mar 01, 2000 at 12:22:09PM -0700, John Starkey wrote:
> I'm not sure if I am out of the scope of this list yet, but since I'm
> still new to Linux and gcc I thought I'd ask you guys.
>
> RedHat6.1 is the system.
>
> I'm trying to compile a small assignment for school using gcc. It won't
> compile so I stripped it down to "Hello World". I thought I'd compiled
> on this machine before but maybe not. Anyway.
from the references to endl and cout and << below, I'm guessing this is
c++ you are writing?
You'll need to invoke the compiler as g++ not gcc:
Script started, file is typescript
[noop@reilly]$cat file.cpp
#include <iostream.h>
int main (void){
cout << "Hello World!\n"<<endl;
}
[noop@reilly]$gcc -o file file.cpp
/tmp/ccZRcQYq.o: In function `main':
/tmp/ccZRcQYq.o(.text+0xa): undefined reference to `endl(ostream &)'
/tmp/ccZRcQYq.o(.text+0x17): undefined reference to `cout'
/tmp/ccZRcQYq.o(.text+0x1c): undefined reference to `ostream::operator<<(char const *)'
/tmp/ccZRcQYq.o(.text+0x27): undefined reference to `ostream::operator<<(ostream
&(*)(ostream &))'
collect2: ld returned 1 exit status
[noop@reilly]$g++ -o file file.cpp
[noop@reilly]$./file
Hello World!
[noop@reilly]$exit
exit
Script done, file is typescript
This should solve it. I believe g++ invokes ld (the linker) with different
options which let it deal with c++ name-mangling...
have fun
greg
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